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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
berkeman
0 31,082
I came across another good search engine today looking for a datasheet, so I thought I'd try starting this thread for...
T 02:05 PM
Jamesangelo
28 58,230
ansoft, maxwell Sticky Thread Pinned: Maxwell 3D (ANSOFT) ( 1 2 3 ... Last)
Dear all, I'm a new user and I like to exchange information about the use of this tool. From my point of view tool...
Aug13-14 03:22 PM
Fuxue Jin
194 94,351
I've occasionally been asked by some of the students I've mentored or TA'd over the years, "What's in your toolbox? ...
Jul13-14 10:34 PM
NATURE.M
63 82,499
Hey guys, I need to figure out how to make a simple test circuit so I can test how much energy is stored inside...
Dec21-05 10:35 AM
berkeman
7 1,688
I will buy an electric bicycle in a couple of months and want to modify it. I will install a motor that has a max...
May22-11 03:02 PM
pengyou
2 2,304
Why is it difficult for an Electrical Engineer to earn a nobel prize in Physics while Physicists get it all? ...
Sep28-08 05:06 PM
f95toli
16 2,687
Does Cramer's rule work in frequency domain? For example, if we have to solve two simeltaneous equations, as in nodel...
Feb23-09 04:07 PM
ravioli
1 3,452
Hi all! I need detailed and authentic advice on this subject. Currently I'm doing Telecommunication engineering and...
Apr29-09 07:27 PM
skeptic2
1 6,363
What area of Electrical Engineering is most interesting with respect to research/specialization? I heard from...
Jul8-09 12:36 PM
berkeman
1 1,579
Hi all! I wanted to have a little clarification about this line in relation to Fourier Series: (It's about a...
Feb19-10 10:44 PM
shazi
1 2,685
Well, I do under stand *what* they do but I have trouble understanding the purpose of these transforms in simple...
May18-10 08:23 AM
Okefenokee
6 11,022
From a book: "The waveform is distorted because of different amounts of attenuation and phase shift suffered by...
Aug12-10 02:22 PM
Peon666
9 5,831
I'm utterly confused about this concept and the text book quite efficiently confuses me further. I'll just try to...
Aug26-10 08:21 PM
skeptic2
1 2,893
Okay, I get that we need it to block DC while allowing the AC to pass. But if we have to block DC, why apply it in the...
Aug26-10 05:16 PM
skeptic2
7 5,184
Hi I'm trying to build a system to generate a spark with sufficient energy to ignite a freely expanding jet of...
Mar11-10 12:32 PM
Bob S
3 922
Hello, this is not homework. I am working on a personal project and had I think a fairly simple set of questions. They...
Jul18-10 02:28 PM
Studiot
8 3,796
I'd like to stick an ac adapter onto a circuit such that when the adapter is plugged in it runs on the ac adapter, but...
Nov16-10 08:49 PM
MATLABdude
4 1,969
Hey guys ! I have just completed my high school ! Not in college till now , having a drop year ! So , I wanted to...
Oct23-11 10:47 PM
vk6kro
1 808
Hi, y(t) is the response of LTI system A to x(t). How could I have figured out that y(t) = x(t) - x(t-2a) (please see...
Jul17-13 03:44 PM
peripatein
2 397
Hi, I have a question concerning convolution. I don't quite understand the boundaries of the integration in the...
Jul18-13 11:33 AM
peripatein
22 645
I just managed solving this question, so thread might as well be closed.
Jul19-13 07:45 AM
peripatein
1 551
Hi, Would someone care to please explain why no current passes through R1 (see attachment) in case Vs is replaced...
Jul17-13 01:14 PM
Windadct
20 676
Hello, I am trying to find the effective resistance of the NLR in the attachment (to the first order). It is given...
Jul19-13 09:01 AM
NascentOxygen
1 427
Hello, Suppose I have the following step response: ystep(t)=(kP/1+kP)(1-e(-t/τ)) where k is constant and P is the...
Mar14-14 01:18 PM
milesyoung
4 404
Ok. im adding this up time and time again and its just not making no sense. Im sitting here trying to brush up on...
Apr28-12 03:50 PM
vk6kro
9 1,249
Does anyone know where i can score a site with lots of problems pertaining to electronics equipment. Trying to...
May1-12 02:35 PM
psparky
4 871
Hello all. So I have been trying to build a mixer lately, I have done my research on google but I am still kind of...
Jun8-14 08:07 PM
Baluncore
25 764
Hi. I am trying to find out what R4 is for or what its job is. Can anyone help? Thank you.
Jun27-12 03:05 AM
perplexabot
2 801
Hi all. I'm trying to do a circuit problem in my book. The circuit consists of a resistor, capacitor, inductor and a...
Jun27-12 03:00 AM
perplexabot
5 7,113
Hi all. I need to find the voltage across the inductor. I begin by solving for the current in the inductor. I first...
Jun28-12 02:54 AM
perplexabot
5 1,166
Hi all. So I have been trying to understand how a emitter follower (common collector) works. But I can't seem to grasp...
Sep5-12 11:55 AM
berkeman
56 5,429
Hello all. So i'm currently studying about current mirrors (specifically the Wilson current mirror). I'm reading "The...
Sep14-12 04:40 AM
perplexabot
6 1,305
Hi all. A problem I was working on required that I find the impulse response where I am given the output function (...
Jan31-13 08:07 PM
Enthalpy
2 1,253
Hey. Was jump starting and charging a car battery a couple of days ago for the first time. I connected the positive of...
Feb10-13 04:35 PM
jim hardy
6 544
Hi all. I don't know if I have given this enough thought but I will ask anyway. I know that a CMOS is an inverter, so...
Feb19-13 05:48 AM
Jony130
5 844
Hello all. I have two questions. 1] How do poles and zeros relate to bode plots? What happens at a pole or zero? ...
Apr28-13 01:08 PM
perplexabot
11 1,251
Hello all. I am currently trying to find the gain of a 2 stage amp. According to some notes I have, it is: A = A1 x...
Jun10-13 04:36 AM
Jony130
1 526
Hello all! Let me get straight to the point. I will be using the Raspberry Pi and the Enocean Pi 902 along with some...
Dec30-13 03:43 PM
perplexabot
5 621
Hello all. I am trying to find a sensor (probably switch is a better word) that will output a HIGH or LOW depending if...
Jun18-14 03:37 AM
jim hardy
9 827
Hello all. I am trying to use a mosfet as a high power switch. I have an arduino nano pin controlling the gate of the...
Mar1-14 05:28 PM
perplexabot
8 445
Hello all. I have been looking into RF amps. I have come across the following cascode amp (from ARRL handbook 2014, p...
Aug12-14 12:49 PM
perplexabot
9 282
Hi all. I started a thread a while back about RF mixer design. I didn't know what to do or what design to choose. You...
Aug13-14 10:39 AM
sophiecentaur
4 202
Hey all. So I am now trying to work on IF amps for a superhet AM receiver (medium wave) and found the following figure...
T 07:39 PM
vk6kro
32 534

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